feat: add vault server profile

- add vault module to puppetfile
- define class to manage the install and config of vault
- manage the datavol and raft storage
- manage the unzip and other compression tools
- define custom unseal script and service
- add documentation on initial setup of vault

hieradata/roles/infra/storage/vault.yaml

@@ -0,0 +1,8 @@
+---
+profiles::vault::server::members_role: roles::infra::storage::vault
+profiles::vault::server::members_lookup: true
+profiles::vault::server::data_dir: /data/vault
+profiles::vault::server::primary_datacenter: 'au-drw1'
+profiles::vault::server::manage_storage_dir: true
+profiles::vault::server::tls_disable: false
+vault::download_url: http://repos.main.unkin.net/unkin/8/x86_64/os/Archives/vault_1.15.5_linux_amd64.zip